By Raymond C. Loehr
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Additional info for Agricultural Waste Management: Problems, Processes and Approaches
Improvements in plant operating efficiency, larger production units, and higher density of production have been responsible for reduction of operational costs. The swine industry represents some 10% of the total cash farm receipts, ranking only behind beef and dairy cattle among all animal commodities. Swine production is moving toward confined feeding although less than 10% of the hogs were produced in total confinement in 1970. Separate farrowing and finishing herds are common in operations having 1000 to 10,000 animals.
In "Livestock W a s t e M a n a g e m e n t a n d Pollution A b a t e m e n t , " P u b l . P R O C 271, p p . 9 9 - 1 0 1 . Amer. Soc. Agr. , 1971. 11. L y o n , W . , E u r o p e a n practice in water quality control. J. Sanit. Eng. , Amer. Soc. Civil Eng. 93, S A 3 , 37 (1967). 12. W i s d o m , A. , " T h e L a w o n the Pollution of W a t e r s , " 2nd ed. Shaw, L o n d o n , 1966. 2 Changing Practices in Agriculture Introduction Agriculture has flourished in areas and regions with favorable conditions for plant growth.
C . , 1969. 7. Sheppard, C. C , and Larzelere, Η. , "Eggs and P o u l t r y — N o w and in 1980," Res. R e p . N o . 5 1 . Michigan State University, East Lansing, 1969. 8. T o w n s h e n d , A. , Reichert, Κ. , a n d Nodwell, J. , " W a t e r Pollution C o n t r o l F a cilities for F a r m Animal Wastes in the Province of O n t a r i o , " Proc. Conf. A n i m . W a s t e M a n a g e . , p p . 131-144. Cornell University, Ithaca, N e w Y o r k , 1969. References 45 9. M u r r a y , D . , H o g l u n d , C.